Legally blind what does it mean average level of education

Legal blindness is a level of visual impairment that has been defined by law either to limit allowed activities (such as driving) for safety reasons or to determine eligibility for government-funded disability benefits in the form of educational, service, or monetary assistance. certificate of higher education level 4 To be considered legally blind, your visual acuity must be 20/200 or worse in your better eye while you are wearing corrective lenses.

(If you have a visual impairment but are not "legally blind" according to the SSA definition above, you still may be eligible for Social Security benefits on the basis of disability. See the SSA website for additional details.) How Many People Are Legally Blind?

In a 2004 study conducted by the Eye Diseases Prevalence Research Group, nearly one million (937,000) people over age 40 in the United States were legally blind, and another 2.4 million Americans had low vision (corrected visual acuity worse than 20/40 in their better eye).

The study authors estimated the number of legally blind Americans would increase by 70 percent to 1.6 million by 2020, with a similar rise in the number of people with low vision, due largely to the aging of the U.S. population. earning potential by education level Legally Blind Due To Reduced Visual Acuity

If you have 20/20 Snellen visual acuity, this means the smallest letters you can discern from a distance of 20 feet (the first number in the fraction) are the same size as the smallest letters a person with historically defined "normal vision" can see at a distance of 20 feet (the second number in the fraction).

But if you have 20/200 visual acuity, the smallest letters you can identify from a distance of 20 feet are the size of the smallest letters a person with historically defined "normal vision" can see from a much greater distance — 200 feet, in this case.

Important: In order for you to be considered legally blind, your visual acuity must be 20/200 or worse in your better eye while you are wearing corrective lenses. So how poorly you see without your eyeglasses or contact lenses when you get out of bed in the morning has nothing to do with it.

People with normal peripheral vision have a maximum lateral field of view that creates an angle of nearly 180 degrees. In other words, distant objects that are located directly to the right or left of the observer are still visible. secondary level of education in india The normal vertical field of view of humans is not as expansive — it creates an angle of about 135 degrees. (Objects directly above us and at our feet are not simultaneously visible.)

If visual field testing reveals your peripheral vision is severely restricted to only 20 degrees (creating a very limited field of view often called tunnel vision), you are considered legally blind — even if you can see the 20/20 line on an eye chart. what is the average education level in the united states Causes Of Legal Blindness

Optic neuritis and neuropathy also can cause legal blindness, as can a number of congenital conditions, such as congenital cataracts, infantile glaucoma, and retinopathy of prematurity. Keratoconus, a gradual thinning of the cornea, also can cause severe vision loss to the point of legal blindness. (Please read " Is Keratoconus a Disability?") Resources Available